Scissors-sharpener.



I. 0. DAY. SGISSORS SHARPBNER. APPLICATION FILED JUNE 26, 1908.

956,518, Patented Ma 3,1910.

ISAAC OTIS DAY, OF OTTUMWA, IOWA.

SCISSORS-SHARPENER.

Specification of Letters Patent.

Patented May 3, 1910.

Application filed .Tune 26, 1908. Serial No. 440,587.

To all whom it may concern:

Be it known that I, ISAAC O'rrs DAY, a citizen of the United States,residing at Ottumwa, in the county of \Vapello and State of Iowa, haveinvented a new and useful Improvement in Scissors- Sharpeners, of whichthe following is a specification.

This invention relates to a sharpening device to be operated by thedriving belt of a sewing machine, the device to be held in position uponthe base of the machine while in use, the scissors to be sharpened to beheld with the right hand.

The invention consists in the novel features of construction hereinafterdescribed, pointed out in the claim and shown in the accompanyingdrawing, in which Figure 1 is a perspective View showing the device inposition for use. Fig. 2 is a side elevation. Fig. 3 is a plan View.

In these drawings 1 represents the base plate of a machine provided withthe usual driving belt 2. My device consists of a base plate 3 from therear edge of which extends a bracket l in which is journaled a shaft 5and upon said shaft is fixed a friction pulley 6 and a grinding wheel 7.Below and slightly in advance of the pulley the bracket carries a pin 8on which is mounted a rotatable tension roller 9. An upwardly andforwardly curved arm 10 supports a rest plate 11 in advance of thegrinding wheel, which plate is inclined toward the wheel, the platehaving the same inclination as that of the proper bevel which should begiven the cutting blades of the scissors.

In use the base 3 is placed upon the base plate 1 of the sewing machineand the drive belt 2 slipped between the roller 9 and the pulley 6. Thefingers of the left hand rest upon the base 3 and the scissor blade isheld in the right hand and is laid flat upon the rest plate 11, thusinsuring the grinding of the blade to the proper bevel. The roller 9serves to hold the belt in engagement with the pulley 6. By slipping thebase 3 slightly forward the pressure of the belt against the pulley willbe decreased, and by sliding the plate 3 in the opposite direction thefriction between the belt and the pulley will be increased. It will beunderstood of course that movement of the base plate 3 in eitherdirection will be very slight.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

A device of the kind described comprising a base plate, a bracketcarried by the rear edge of said plate, a shaft mounted in said bracket,a pulley fixed on the shaft, a grinding wheel fixed on the shaft, aforwardly and upwardly curved arm, a rest plate supported by said arm inadvance of the grinding wheel, and inclined with respect to the baseplate, and a pin carried by the bracket below and slightly in advance ofthe pulley, as and for the purpose set forth.

ISAAC OTIS DAY.

WVitnesses:

TENA HULL, JOHN W. HULL.

